Results 31 to 40 of about 1,068,873 (286)

Effects of structural heterogeneity of a laboratory arena on the movement patterns of adult Eriopis connexa and Hippodamia variegata (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2000
We asked if the structural heterogeneity of a laboratory arena differentially affected the abandonment of the plot, residence time, locomotory rate, pause duration and turning rate of adult Eriopis connexa and Hippodamia variegata (Coleoptera ...
Audrey A. GREZ, Paula VILLAGRÁN
doaj   +1 more source

An exhaustive survey of regular peptide conformations using a new metric for backbone handedness (h) [PDF]

open access: yesPeerJ, 2017
The Ramachandran plot is important to structural biology as it describes a peptide backbone in the context of its dominant degrees of freedom—the backbone dihedral angles φ and ψ (Ramachandran, Ramakrishnan & Sasisekharan, 1963).
Ranjan V. Mannige
doaj   +2 more sources

X-ray peak profile analysis of CoAl2O4 nanoparticles by Williamson-Hall and size-strain plot methods [PDF]

open access: yesModern Electronic Materials, 2018
CoAl2O4 nanoparticles were prepared by a sol-gel process using citric acid as chelating agent with different calcination temperatures of 600 to 900 °C. The crystalline spinel cubic phase was confirmed by X-ray diffraction results.
H. Irfan, K Mohamed Racik, S. Anand
doaj   +3 more sources

Characterization of Zinc oxide & Aluminum Ferrite and Simulation studies of M-H plots of Cobalt/Cobaltoxide

open access: yes, 2017
Zinc oxide and Aluminum Ferrite were prepared Chemical route. The samples were characterized by XRD and VSM. Simulation of M-H plots of Co/CoO thin films were performed. Effect of parameters was observed on saturation magnetization.
Kumar, Prashant   +3 more
openaire   +2 more sources

Structure and Magnetization of Two-Dimensional Vortex Arrays in the Presence of Periodic Pinning [PDF]

open access: yes, 2003
Ground-state properties of a two-dimensional system of superconducting vortices in the presence of a periodic array of strong pinning centers are studied analytically and numerically. The ground states of the vortex system at different filling ratios are
A. Abrikosov   +28 more
core   +2 more sources

Disentangling the Hercules stream [PDF]

open access: yes, 2006
Using high-resolution spectra of nearby F and G dwarf stars, we have investigated the detailed abundance and age structure of the Hercules stream.
Asplund M.   +9 more
core   +2 more sources

A New Graphical Approach for Heat Exchanger Network Retrofit Considering Capital and Utility Costs

open access: yesChemical Engineering Transactions, 2018
Development of methodologies and tools for heat exchanger network (HEN) retrofit has focused on generating retrofit solutions to address issues of vital importance to industry including energy, economy and sustainability. This work extends the use of the
Yee Qing Lai   +2 more
doaj   +1 more source

X-ray Diffraction Analysis of Cu2+ Doped Zn1-xCuxFe2O4 Spinel Nanoparticles using Williamson-Hall Plot Method

open access: yes, 2019
The nanoparticles (NPs) of Zn1-xCuxFe2O4 (ZCFO) spinels with x = 0, 0.2, 0.4, 0.6 and 0.8 were synthesized by a sol-gel combustion method using acetate precursor. The NPs of ZCFO were prepared by following calcination process at 600C for 8hrs.
Kumar, Abhishek   +3 more
core   +1 more source

PROFIL SPEKTRA INFRA MERAH SERBUK Gelidium Zollingeri DENGAN ANALISIS PCA

open access: yesJIIS: Jurnal Ilmiah Ibnu Sina, 2022
Gellidium zolingeri merupakan rumput laut Rhodophyta. Kandungan Gellidium zolingeri yaitu Mycosporine-like amino acid (MAAs), protein (asam amino), pigmen (phycobiliprotein dan karotenoid), senyawa fenol, fucoidan dll.
Farizah Izazi, Yuyun Nailufa
doaj   +3 more sources

Self-magnetic compensation and Exchange Bias in ferromagnetic Samarium systems

open access: yes, 2010
For Sm(3+) ions in a vast majority of metallic systems, the following interesting scenario has been conjured up for long, namely, a magnetic lattice of tiny self (spin-orbital) compensated 4f-moments exchange coupled (and phase reversed) to the ...
A. K. Grover   +8 more
core   +1 more source

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